Hot Corners still pop up using Mouse/Touchpad even if disabled in RetroUI

Symptom:Hot corners still pop up when using a mouse when they are disabled in RetroUI.

Explanation of problem:Some
new mice and touchpads generate 'gestures'. You can test this by
making a gesture from outside the touchpad. Place your finger outside
the touchpad on the right side, then swipe your finger in, moving from
right to left to the center of the touchpad. If this opens the Charms
Bar, them your device is generating gesture events.

The process
varies in how to disable these but if you open your mouse or touchpad
properties it can be turned off. Please read the following article on
this topic.

RetroUI block Hot corners feature blocks MOUSE input to the Hotcorners, and does not / cannot block these gestures.

Microsoft discussion on how to Disable Trackpad gesture support in Windows 8: